Teaghan is a distinctive girls' name in United States, ranking #3974 in 2007 with 40 recorded births. The name reached its all-time peak in 2011 with 91 births ranking #2120. Since 1996, the popularity has increased by 700.0%. In 2007, approximately 1 in every 48,061 girls born was named Teaghan. FALLING Recent data shows the name is currently falling.